Etienne Rosse is recorded as Horloger de la Ville in Evreux in 1813, and as making a complicated astronomical regulator with seven dials. Rosse Aîné, probably the same maker, is recorded in Paris, rue Vieille du Temple (1830) and then rue de St-Quentin. He was awarded a bronze medal in 1849.
Case mounts of apparently identical design may be seen on a mahogany table regulator by Lory illustrated in D. Roberts, Precision Pendulum Clocks: France, Germany, America and Recent Advancements, Atglen, 2004, p. 99, fig. 31-14B and on another by Bourdier, in the Spanish royal collection, p. 77, fig. 29-13. Roberts also illustrates similar cases with 'Egyptian' monopodiae.
Etienne Gobin, known as Dubuisson (d. circa 1822), watch and clock enameller, worked at Chantilly and Sèvres as a flower painter. He is later recorded in the Rue de la Huchette in the 1790s before moving to Rue de la Calandre around 1812. See also lots 563 and 569.